TRIFID^. 



335 



a uniform dark umbreous, except that the first, second and 

 subtermiual lines are pale ijcUoio. Another form, of which 

 three specimens were raked from overhanging edges of sand- 

 hills at Rhyl, North Wales, in August 1862, is of so singular 

 an appearance that the late Mr, H, Doubleday, to whom two 

 of them were sent, considered them to belong to a distinct 

 species, to which he gave the name of Lupcrina Giten^d, 

 publishing a description in the Entomologists' Anmtal for 

 1864, p. 123. These differ from ordinary L. testacca more 

 particularly in the circumstance that while the central por- 

 tion of the fore wings is of the same pale yellowish-brown as 

 the remainder of the wings, the second line is comparatively 

 distinct, formed into black crescents and edged luith vjhite, 

 while the cilia are strongly chequered with brown and pale 

 drab, and the hind wings of a singularly pure white without 

 even the marginal brown lines. Further search in the same 

 locality failed to reveal additional specimens, and, so far as 

 I know, none precisely resembling these have since been 

 found, but intermediates fully connecting them with the 

 more usual pale forms of L. festacea are now known, and 

 there seems no room for doubt that the supposed L. Guen(fci 

 is simply an extreme variety of that species. It has a curious 

 superficial resemblance to Agrotis ripce. A single example 

 appears to have been in the collection of M. Guenee in 

 France, and for this reason it was named by Mr. Doubleday 

 after that distinguished entomologist. Two of the three 

 Rhyl specimens passed through the hands of Mr. J, B. 

 Hodgkinson into the collection of the Rev. Henry Burney, 

 and after his decease into that of Dr. P. B. Mason, who 

 has deposited one of them in the National Collection ; the 

 other is before me, with one intermediate variety, also from 

 Dr. Mason's cabinet. The third example seems to have been 

 purchased by a lady at Fulham, but its present resting-place 

 is unknown to me. Two go-called Guen^ei in the collection 

 of the late Mr. F, Bond do not fully agree with this variety 

 of L. testacca. Another form of a greyer colour, of which a 



